Archosauria

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Definition
  1. Noun:
    • A large subclass of diapsid reptiles: "Archosauria" is a major taxonomic group within the class Reptilia, characterized by certain skeletal features, notably openings in the skull behind the eyes (diapsid condition). This group includes many extinct and living reptiles.
Usage Examples
  • Noun:
    • The study of Archosauria provides crucial insights into the evolution of dinosaurs and birds.
    • Crocodilians are among the few surviving members of the Archosauria.
Advanced Usage
  • In phylogenetic context: The term "Archosauria" is used in scientific classification to denote the clade (a group with a common ancestor) that includes crocodilians, birds, and all extinct dinosaurs and pterosaurs.
    • Modern birds are now classified within the Archosauria, linking them directly to dinosaurs.
Variants and Related Words
  • Archosaur (n): Any member of the group Archosauria.
    • The fossil was identified as an archosaur from the Triassic period.
Synonyms
  • Archosaurian reptiles: A descriptive synonym emphasizing the reptilian nature of the group.
Different Meanings / Contexts
  • Paleontological / Zoological Context: This is the primary and only standard meaning. It refers specifically to the scientific classification of a group of reptiles. It is not used in everyday language.
Noun
  1. a large subclass of diapsid reptiles including: crocodiles; alligators; dinosaurs; pterosaurs; plesiosaurs; ichthyosaurs; thecodonts

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